Midnight Treasures

Just completed this achievement, because it's good the get the worst stuff out of the way early. Unfortunately I was forced to do it with my 80 lvl horde alt, because trying to get it naturally on alliance EU is depressing - every time I tried, I got outnumbered 5+ to 1. And once again I pray it's the last time I have to do it, at least in this form. Once logged to horde toon, I just had to click faster than others, so level didn't matter much. 80 lvl horde > 90 lvl alliance

Never expected this line of achievements going unchanged for so many expansions ... when spam clicking the box gets you there, and people actually fighting for the prize are getting outplayed by the achievement's toxic design.
I would compare it to the recent training grounds arathi basin cap achievement, you actually compete against your own team more than the actual opposite faction/team. Never before I saw achievements making people despise each other so much. Just make everybody channeling get the credit, multiply the required amount of caps by whatever number (if you are afraid that it will become too easy), and I don't think you would see as much toxicity between members of the same faction then. It should be team effort, not THIS...

This is exactly as you describe. Disgusting and toxic design.

The achievement is currently quite simple, no raid is needed, and you don't even need level 90. The bottom line is that you need a twink in the range of level 20-79 with access to Chrome Time (specifically Dragonfly). Then, through the teleporter in the capital, we jump into the Silvermoon (it will be updated already) and turn on the warmod. A separate shard is being created for you for 2 zones - Eversong woods and Zul'Aman - and there, without competition, we loot one box of military supplies in each zone every 15-16 minutes. Be careful - mobs do not grin at such actions - and they can attack small twins from a fairly long distance. This is much faster and more convenient than competing with an entire raid and your own ping. For the convenience of keeping the arrival timers of supplies, I advise you to install a Hated Crate Tracker. The addon can be found on Curse Forge.